No abstract

In this paper we review the work that has been done on studies of parity violation in nucleon systems using polarized beams of slow neutrons, first describing an early attempt by Haas er al. (Phys. Rev. 116, 121 1 (1959)) and ending with some suggestions and predictions for the future. Dans cette publication, nous revoyons le travail qui a Ct C fait sur I'Ctude de la violation de la parite dans les systitmes de nuclCons utilisant des faisceaux polarisCs de neutrons lents, dtcrivant d'abord un essai original (R. H. Haas er al. Phys. Rev. 116, 121 1 (1959)) et finissant avec quelques suggestions et prtdictions pour I'avenir. a [Traduit par la revue]can. 1. Phys. 66, 542 (1988)

-NOTICE- ABSTRACTA summary of a comprehensive analysis of theoretical and practical aspects of position sensing by charge division from resistive electrodes is presented. Properties of transformer decoupling of the resistive electrode from detectAi bias voltage are analyzed and compared to the usual capacitive decoupling methods. Optimization and limitation of signal shaping is discussed as a function of diffusion tine constant, signal rise times, and noise.

We have developed and tested a thermal neutron, twodimensional position-sensitive detector for use in neutron scattering from biological samples. The detector is based on a multi-wire proportional concept* with a gas filling of 6 atmos. He 3 , 4 atmos. A, and 0.5 a trios. C02. The position readout uses a resistive wire with charge division to determine position. We have measured a resolution of less than 3 mm (FWHM) with a detection efficiency of 707o at 2.8 I neutrons. Considerations leading to an optimal configuration are discussed.

We have developed and tested a thermal neutron, twodimensional position-sensitive detector for use in neutron scattering from biological samples. The detector is based on a multi-wire proportional concept* with a gas filling of 6 atmos. He 3 , 4 atmos. A, and 0.5 a trios. C02. The position readout uses a resistive wire with charge division to determine position. We have measured a resolution of less than 3 mm (FWHM) with a detection efficiency of 707o at 2.8 I neutrons. Considerations leading to an optimal configuration are discussed.